2243499521 has 2 divisors, whose sum is σ = 2243499522. Its totient is φ = 2243499520.

The previous prime is 2243499497. The next prime is 2243499529. The reversal of 2243499521 is 1259943422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2233507600 + 9991921 = 47260^2 + 3161^2 .

It is a cyclic number.

It is not a de Polignac number, because 2243499521 - 2²² = 2239305217 is a prime.

It is not a weakly prime, because it can be changed into another prime (2243499529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121749760 + 1121749761.

It is an arithmetic number, because the mean of its divisors is an integer number (1121749761).

Almost surely, 2^2243499521 is an apocalyptic number.

It is an amenable number.

2243499521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243499521 is an equidigital number, since it uses as much as digits as its factorization.

2243499521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 2243499521 is about 47365.5942747476. The cubic root of 2243499521 is about 1309.1075484304.

The spelling of 2243499521 in words is "two billion, two hundred forty-three million, four hundred ninety-nine thousand, five hundred twenty-one".